Ricoh Aficio Color 3006 Service Manual page 447

24 February 1999
SC
Item Detection Conditions
No.
SC361 Revolver HP - Timing & Condition -
sensor error
The home position is not
detected during 3 revolutions
of the revolver unit after the
revolver motor turns on.
SC385 ID sensor - Timing -
VSG
During process control self
adjustment
check, the main control board
error
detects that the Vsg signal fed
back from the ID sensor is out
of range.
Related
Possible Causes
SCs
• Poor connection of
connector
• Dirty sensor
• Defective sensor
• Defective revolver
motor
• Defective revolver
drive board
• Defective I/O
control board
• Defective main
control board
• Dirty ID sensor
• Poor connection of
connector
• Defective ID
sensor
• Poor cleaning
11
Troubleshooting Procedure
1. Check if the sensor connector is properly connected.
2. Replace the revolver H.P. sensor if the voltage at
CN203-A4 on the I/O control board does not change
when covering the sensor with a piece of paper.
NOTE: Make sure that the revolver unit is locked for
this step.
3. If the revolver unit does not rotate;
1 Replace the revolver motor.
2 Replace the revolver motor drive board.
3 Replace the I/O control board.
4 Replace the main control board.
- Signals to Check -
• Revolver H.P.: CN203-A4 or TP211 on I/O control
board
1. Clean the ID sensor.
2. Check if the sensor connector is properly connected.
3. Replace the ID sensor.
4. Check the drum cleaning unit.
- Signals to Check -
• ID sensor LED: CN203-B9 or TP252 on I/O control
board
• ID sensor 1 (K ): CN203-B10 or TP227 on I/O control
board / TP174 on main control board.
• ID sensor 2 (CMY): CN203-B11 or TP229 on I/O
control board / TP173 on main control board.
SC CODES
Type
D
D